Has anybody tried Istanbul? It's a session recording tool that supposedly lets you record OpenGL applications and has very high performance. I'm compiling it now and wanted to know if anybody had any tips.

I heard that used to be Constantinople.

Does it record opengl output?
Might be just what i'm looking for

I've been playing with it. It's a little buggy (it crashed with some filenames I picked, and the "Encode after stopping recording" option sometimes broke), but it does record OpenGL, as promised. Without using the "Encode after stopping recording" option (ie: on-the-fly transcoding) my system was able to handle recording 1280x1024 at 30fps direct to Ogg Theora without significant slowdown. w00t for dual core processors. Oh yeah, I was also ripping a CD to Ogg Vorbis at 14x at the same time. :-D

But that's nobody's business but the Turks!

Cool. There's a new version of xvidcap too. Maybe it finally has some decent codecs or at least a working jpeg one. :<

EDIT: nope .. xvidcap still sucks ass

So I probaby haven't posted in a year... :)... anyway.. I just installed this, was looking at it and it looked darn cool. Maybe I can finally make some vids of stuff.

Tried it after readin this thread, and apart from a few other bugs I found (some codecs seem borken, some errors happen with ceratin options that seem to be nonsical, and some other bits n bobs) but once you found the right setting, its nice!

it works fine for recorsing the desktop, but doesn´t seem to record Vendetta. or other fullscreen games.

You usually need to run in windowed mode to record with any tool...

Xvidcap
http://xvidcap.sourceforge.net/
Yucon
http://forums.gentoo.org/viewtopic-t-448242.html
Wink
http://www.debugmode.com/wink/
ScreenKast
http://www.captorials.com/index.php?cmd=software

Also you can use VLC

Not sure which of those can record OpenGL output